1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcc44b6c1b584f34b7a4d307233f0a4b0cfa15f1a64a70cbe23f806a8a8189f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0638cd4-7ea6-475c-aad4-0e6a608415aa.json and https://artists.proofprofile.net/proofs/artist/e0638cd4-7ea6-475c-aad4-0e6a608415aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7261ecfec7f27a1c329058903fa4651ba63edf1f774b8060fc4fe5ce6765855. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFM2132025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c25ce5e31915dfb698bebe708c941a355cb71074ca4574c3fc1661ff9f35d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC8V2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301e02a8e7dc12ea52e11d5906fc81aa64c099197ac77c21afd16c9b7a4fbbc3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC8V2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae8c188dd72e3e0b1234ba1d02e7dd5862197fa386cc833bdae184a4dc5657. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC8V2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555781a035f17582bf1215d96639d5224ef43cd8c32bc2f097548ce6df53ff24. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC8V2200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654dae1d00bff4986eed972f47b812d45a00d6ee6d3a39e557e3723e7d3f6b81. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f5859f11e1d21b2899699ee9164a31ffc38985a9cb83bb3bbe78f515ec19c9. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcccd53bdd242219b322e34954b2e0c1d7cd2f574b4b57def7f82b3258f4c7db. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36615bdad798bbd3cf7fb2072521c9a6cd1f152bb04b7abf5ce88c3de1325281. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaffe99ac574cd862286f1eaabd3e7f4e0cd677e666c9fc6ca0b963bcf7fbe5a. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315edd23e08e17a834af5c46ebaac80eeba83a12baf3441390093013f287a990. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5ecc5fa39d34ce89dcf9d45dd2595a2287e206e9a7b76be975d03f96ed342a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d115c2ea007ee9796b60aae23333be322801659bcd37859e2e8a472c378e79e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHC2386791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf7c1dbab36576947b1f16acb06b9e5dabc4191d2a525ac4e365f73b112ad29. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2286455.
SUD MOST WANTED (feat. Peppe Soks, Lil Parta, SKT, Enzo Benz, Welo, Kid Lost, O'Tsunami)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b520af000daba3428b7c27898257047ead5954c2a7836f86aa02edaf7976d4c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITVU12500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda225f86d065e00298bc65faae69ae958705730d2ae8deef83a6099d93e531b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITFHF2400205.